GitLab

Refactoring of the internal input events blocker in
TabletModeController.

The input events should only be blocked if 1) we're currently in tablet
mode or 2) we're currently in laptop mode but the lid is flipped over,
i.e., we are in laptop mode because of an attached external mouse.

Bug: 887042
Change-Id: I8be03c684265d79ccc3499362a7154eb44c4dec0
Reviewed-on: https://chromium-review.googlesource.com/1237407
Commit-Queue: Xiaoqian Dai <xdai@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593671}